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TD42 missing at 1800 rpm
Posted: Sat Jul 18, 2020 11:56 am
by webfish
Long time since I was last here.
My 1990 Safari TD42 has suddenly started missing at 1800rpm. I though it was probably the fuel filter so changed that but alas, no better.
Basically, runs fine until you hit that rev range then there is a sudden loss of power and the vehicle simply won't push through. If I back off a bit she drives fine.
Any ideas before I take it to the garage?
Re: TD42 missing at 1800 rpm
Posted: Sun Jul 19, 2020 9:41 am
by MihiT
If it's auto, I blame the box.
If not. How many KM since: Air cleaner? Injectors?
Check rubber lines/connections for vacuum leaks
There's also a secondary gauze filter atop the IP. Remove and clean.
Re: TD42 missing at 1800 rpm
Posted: Sun Jul 19, 2020 9:59 am
by webfish
Thanks, vehicle is manual and must be about 350K on the clock.
Haven't done the air-cleaner in a couple of years but she's had pretty light use due to company ute. Might be worth replacing anyway.
What's the IP? Once this gets too technical I need to seek professional help but it's worth trying a few obvious things first

Re: TD42 missing at 1800 rpm
Posted: Sun Jul 19, 2020 3:27 pm
by webfish
FFS. Changed the air-filter and it runs sweet.
Thanks @MihiT
Re: TD42 missing at 1800 rpm
Posted: Thu Jul 23, 2020 6:03 pm
by MihiT
webfish wrote:
What's the IP? Once this gets too technical I need to seek professional help but it's worth trying a few obvious things first

Injector pump. Is one banjo bolt on the fuel feed into it, spring and mesh filter underneath. Easy enough to get to. Need fairly fine hook/pick to pull the screen out.
Simple things often overlooked, glad it was an easy fix!
Re: TD42 missing at 1800 rpm
Posted: Thu Jul 23, 2020 6:06 pm
by MihiT
FWIW I run a K&N washable/oiled filter in mine. Spend a lot of time on gravel, and manage to pick up all kinds of road grime sludgy crap as well. When performance (such as it is

) drops off I generally give it oil and filters.